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CP Ceti

CP Ceti Facts

CP Ceti's Alternative Names

HIP4530 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD5660.

CP Ceti has alternative name(s) :- CP Cet, CP Cet.

More details on objects' alternative names can be found at Star Names .

Location of CP Ceti

The location of the giant star in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. For CP Ceti, the location is 00h 58m 00.41 and -22° 35` 44.3 .

Physical Properties (Colour, Temperature) of CP Ceti

CP Ceti has a spectral type of K4/K5III. This means the star is a orange to red giant star. The star has a B-V Colour Index of 1.54 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 3,913 Kelvin.

CP Ceti Radius has been calculated as being 107.63 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 74,886,524.25.km. If you need the diameter of the star, you just need to multiple the radius by 2. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

CP Ceti Apparent and Absolute Magnitudes

CP Ceti has an apparent magnitude of 8.48 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. Using the supplied Parallax value, you would get an absolute magnitude of -3.62 Magnitude, whether it be apparent/visual or absolute magnitude is measured by a number, the smaller the number, the brighter the Star is. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.

Distance to CP Ceti

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.38 which gave the calculated distance to CP Ceti as 8583.25 light years away from Earth or 2631.58 parsecs. It would take a spaceship travelling at the speed of light, 8583.25 years to get there. We don't have the technology or spaceship that can carry people over that distance yet. CP Ceti brightness ranges from a magnitude of 8.625 to a magnitude of 8.568 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 70.7 days (variability).

Source of Information

The source of the information if it has a Hip I.D. is from Simbad, the Hipparcos data library based at the University at Strasbourg, France. Hipparcos was a E.S.A. satellite operation launched in 1989 for four years. The items in red are values that I've calculated so they could well be wrong. Information regarding Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

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Additional CP Ceti Facts and Figures

Visual Facts


Primary / Proper / Traditional NameCP Ceti
Alternative NamesCP Cet, HD 5660, HIP 4530, CP Cet
Spectral TypeK4/K5III
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeGiant Star
ColourOrange to Red
GalaxyMilky Way
ConstellationCetus
Absolute Magnitude -3.62
Visual / Apparent Magnitude8.48
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)00h 58m 00.41
Declination (Dec.)-22° 35` 44.3
Galactic Latitude-85.23 degrees
Galactic Longitude141.48 degrees
Distance from Earth0.38 Parallax (milliarcseconds)
 8583.25 Light Years
 2631.58 Parsecs
 542,798,556.55 Astronomical Units
B-V Index1.54
Radial Velocity-3.10 ± 999.00 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Mean Variability Period in Days70.700
Variable Magnitude Range (Brighter - Dimmer)8.568 - 8.625

Estimated Calculated Facts


Radius (x the Sun)107.63
Effective Temperature3,913 Kelvin

Sources and Links


SIMBAD SourceLink

Related Stars


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